Cornea
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Comparative Study
Donor Cornea Harvest Techniques: Comparison Between Globe Enucleation and In Situ Corneoscleral Disc Excision.
To compare whole eye enucleation and corneoscleral disc (CD) excision as donor cornea harvesting techniques for possible effects on corneal cultivation and the clinical outcome of the corneal grafts after transplantation in 2929 cases. ⋯ After a transient technical learning period, in situ CD excision proved to be a method of donor cornea recovery with similar cultivation performance and clinical results compared with whole eye enucleation. It also may have led to higher willingness to donate, possibly because of better acceptance by the relatives of the deceased.
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To evaluate the ocular surface parameters that could predict patient satisfaction after single application of vectored thermal pulsation (VTP). ⋯ VTP can be effective in treating dry eye symptoms of patients with MGD. Our data show that objective findings of dry eye, as evidenced by lower tear production, higher corneal and conjunctival staining scores, and higher osmolarity, tend to be markers present in the group of patients responding positively to VTP.
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Case Reports
Reactivation of Herpes Zoster Keratitis With Corneal Perforation After Zoster Vaccination.
We present a case of reactivated herpes zoster keratouveitis of 6 years duration with corneal perforation requiring penetrating keratoplasty shortly after inoculation with herpes zoster vaccine (Zostavax, Merck, Quebec, Canada). ⋯ We present a case of reactivation of herpes keratouveitis shortly after vaccination with Zostavax in a patient with previous herpes zoster ophthalmicus. We demonstrate, for the first time, ultrastructural evidence consistent with inactive virus capsids in diffusely degenerated keratocytes in the extracted corneal tissue.
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Case Reports
Nodulo-Ulcerative Ocular Surface Squamous Neoplasia in 6 Patients: A Rare Presentation.
To describe clinical presentation and histopathological features of a nodulo-ulcerative variant of ocular surface squamous neoplasia (OSSN). ⋯ The nodulo-ulcerative variant of OSSN is rare and is most often misdiagnosed as necrotizing scleritis/sclerokeratitis causing a delay in the diagnosis. It is an aggressive lesion with increased occurrence of intraocular or orbital tumor extension.
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To report the surgical outcomes and complications of therapeutic penetrating keratoplasty (TPK) using glycerol-preserved corneas in infectious keratitis. ⋯ TPK using glycerol-preserved corneas has a high rate of secondary glaucoma and recurrence of infection with unsatisfactory visual results. These corneas may be used as temporary emergency transplants in infectious keratitis when fresh corneas are unavailable to meet demands.